CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[ICEM] How to threat a multiblock mesh from Tecplot

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   April 19, 2010, 11:56
Default How to treat a multiblock mesh from Tecplot
  #1
New Member
 
Join Date: Mar 2010
Posts: 5
Rep Power: 7
vagmakr is on a distinguished road
Hello to everyone.

I imported a multiblock mesh from tecplot to ICEM.

Is there a way to smooth it but to keep some nodes on a specific block on their positions?

I know the smooth globally button but can i just pick some elements to stay in their starting positions?

Thank you in advance

Last edited by vagmakr; April 19, 2010 at 14:03.
vagmakr is offline   Reply With Quote

Old   April 20, 2010, 10:15
Default
  #2
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 36
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
I assume you are talking about unstructured mesh (not multiblock structured) because you want to freeze specific elements.

One way to do it is to lock the nodes... (under Edit Mesh => Move Nodes). This will work with any of the unstructured smoothers.

LockUnlock.gif

You probably shouldn't be using the global smoother with hexa mesh, it works, but it is not as effective as it is for tetra/prism mesh. On the other hand, the same smoothing algorthms are available under "Repair mesh" but can be applied to selected elements (not globally), so you might want tor try that.

You could try the Orthogonality smoother but it has been improving over the years, so your level of success may be dependent on your version .

One last thing to mention... When you import a mesh, it doesn't have the projection information needed to smooth it well (which nodes are on curves, which are on surfaces, etc.) You really should try the "Edit (menu) => Mesh to Facets" and build in sharp features so you get a geometry and the mesh is associated with it before you smooth. You can check for this by turning on nodes as dots (right click on the mesh branch of the model tree); if you only see Cyan (blue) dots, you are not yet associated. If you are importing a geometry separately (not extracting it from the mesh) you can associate the mesh with the geometry under Edit Mesh => Repair Mesh => Build Mesh Topology...

You can also convert your imported mesh back into a blocking file if you want to edit and smooth that way...
PSYMN is offline   Reply With Quote

Old   April 20, 2010, 11:46
Default Thank you for your time
  #3
New Member
 
Join Date: Mar 2010
Posts: 5
Rep Power: 7
vagmakr is on a distinguished road
Thank you for the immidiate answer but i really want to do the job in a Multiblock structured mesh, the reason is that some specific nodes in my problem should have an exact position and a different BC.

Is there a way to keep some of them still and just smooth all the others ?
vagmakr is offline   Reply With Quote

Old   April 20, 2010, 12:55
Default
  #4
Senior Member
 
PSYMN's Avatar
 
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,662
Blog Entries: 1
Rep Power: 36
PSYMN has a spectacular aura aboutPSYMN has a spectacular aura about
For structured MultiBlock, we don't really provide direct control over individual elements, however, we can freeze a vertex (corner of a multiblock) and we can freeze entire blocks or faces... Those options should be available when in an appropriate multiblock smoother...
PSYMN is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
vtk mesh or Abaqus mesh to OpenFOAM bigphil Open Source Meshers: Gmsh, Netgen, CGNS, ... 19 August 16, 2011 04:14
[ICEM] Saving mesh as Multiblock lost.identity ANSYS Meshing & Geometry 1 July 10, 2009 13:07
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
ICEM 10 mesh question DAK565656 CFX 6 May 8, 2007 12:16
Icemcfd 11: Loss of mesh from surface mesh option? Joe CFX 2 March 26, 2007 18:10


All times are GMT -4. The time now is 05:10.